Dell PowerConnect 7048P Manual page 619

In the Static row, click the space for ports 16–20 so the U (untagged)
b
displays for each port.
Figure 21-27. VLAN Membership - VLAN 200
3 Click Apply.
4 Assign ports 2–15 and LAG1 to the Payroll VLAN.
From the Switching → VLAN → VLAN Membership page, select
a
400-Payroll from the Show VLAN field.
In the Static row, click the space for ports 2–15 and LAG 1 so the U
b
(untagged) displays for each port, and then click Apply.
5. Configure LAG 1 to be in general mode and specify that the LAG will
accept tagged or untagged frames, but that untagged frames will be
transmitted tagged with PVID 400.
Configuring VLANs
619